Serving tray



FIG. 1 is a perspective view of the serving tray;

FIG. 2 is a top plan view of the serving tray;

FIG. 3 is a bottom elevational view thereof;

FIG. 4 is a front elevated view of the serving tray, the rear elevational view being identical; and,

FIG. 5 is a left side elevational view of the serving tray, the right side view being identical.

Broken lines illustrate features or environmental components that are not part of the design sought to be patented. 

I claim the ornamental design for a serving tray, as shown and described. 